Improvement in window-sash weights



Nrrnn STATES PATENTk OFFICE.

IMPROVEMENT IN WINDO-W-'SASHl WEIGHTS.

Specification .forming part of Letters Patent Nd. 42,090, dated March 29, 1864 To' 'all whom it may concern:

Beit known that I, HENRY LANERGAN, a

' resident of Boston, in the county of Sutolk and State of Massachusetts, have-invented an Improved Window-Sash Weight; and I do hereby declare the same to be fully described in the following specification and represented in the accompanying drawings, of which- Figures l and 2 are side views, and Fig. 3 a vertical section, of it.

The nature of my improvement consists in constructing the weight-knot chamber open ing out ot' it laterally, and provided with a rope-passage leading out of it in theaxjs of the weight.

In the drawings, A denotes the weight, of which B is thc knot-chamber, and a its ropepassage. rlhe said knot-chamber, opens out of the side of the weight, as shown at b, and is for the purpose of holding a knot to be made on the end of the rope or line by which the weight is to be connected with a windowsash. The opening b of the knot-chamber is to be of a size suicient to allow the knot to be drawn into the chamber, which should be large enough to contain the whole of the knot, in order that no part of it may project from 1t.

The rope-passage a is to be of a diameter or width equal to or a little greater than the diameter o't' the line I, on which the knot-is made, and is to be arranged with its vertical axis coincident with that ot' the weight A. Under these circumstances the weight A will hing perpendicularly when suspended by lts rope. u

In applying the rope to the welght,a knot is first to be made in or at one end of the rope,

after which the other end ofthe rope is to be passed into the opening b and through the chamber B and the passage a. The rope is next to be dra-wn through the passage auntil Lhe llrnot may be wholly drawn into the cham- The ordinary construction of a sasliswight is represented in side yiews in Figs. 4 and 5, the weight being made somewhat tapering at top, and having a rope-hole made through the tapered part. In the application of a rope to such a weight, the knot, if against the hole, will cause the weight to tip more or less or hang out of plumb, in which case, it, aswell as the knot, is apt when in use to bear and rub against the sides of its groove in the window frame. With my improved counterbalancing-weight the knot is wholly within'the weight, and the axis of the suspension-rope is directly. within the vertical line passing through the centeivof gravity of the weight. Consequently the weight will always hang plumb or vertically, and neither 'it nor the knot while in use will be likely to be'borne against the sides of the weight vgroove or chamber'ot' the window-frame.

I claim- The improved windowsash weight, as made HENRY LANERGAN.

Witnesses R; H. EDDY, F. P. HALE, Jr. 

